| An oil-boom is a common tool to deal with oil spills on the sea surface. However, oil will escape underneath the boom and the containment will fail if certain fluid-dynamic conditions are not satisfied. This paper studies oil and water's dynamic "behavior near an oil-boom by using a commercial computational fluid dynamics software, CFX4.3, in order to provide necessary numerical results for the improvement of boom techniques.The HOMOGENEOUS MODEL[35], which is simplified model of multi-fluids model integrated CFX4.3 software, is used to simulate 2-D two-phase immiscible oil-water transient flow with a free surface. This paper simulates two cases of oil-boom failure in water flow: the drainage failure and the critical accumulation failure. The computational results are consistent with the numerical ones of Cheng S.Y.1191 and An C.F. et all34] under same conditions. The critical failure velocities obtained in this paper are almost same as the experimental results of Delvigne161 and Johnston et alt?1 for light and heavy oils, respectively.Practically, the oil spill containment depends on the boom draft D, the water depth H, the relative oil-water velocityU, the oil volume per unit boom widthg, and the physical properties of oil, such as p,,(oi\ density),u0(oil viscosity) and a- (oil-water interfacial tension coefficient). A series of numerical studies on the effect of oil-water interfacial tension coefficient, water deep, boom draft, the oil volume per unit boom width and oil viscosity are performed in this paper to show the behavior of oil slick contained by oil-boom. It's found that the effect of oil-water interfacial tension may be neglected within the range of practical oil-water surface tension coefficient ( |
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